<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<script src="./vue.js"></script>

<body>
  <!-- 跟标签 -->
  <div id="app">
    <!-- 插入msg数据 -->
    <p>{{msg}}</p>
  </div>

  <script>
    let vm = new Vue({
      el: "#app",
      data: {
        msg: "Hello Vue.js"
      }
    });
  </script>
</body>

</html>